* {
    margin: 0px;
    padding: 0px;
    list-style: none;
}

.slide{
    width: 760px;
    height: 270px;
    border: 1px solid pink;
    margin: 100px auto;
    position: relative;
    overflow: hidden;
}

.slide ol{
    position: absolute;
    left: 340px;
    bottom: 10px;
}

.slide ol li {
    width: 12px;
    height: 12px;
    background: #9f9f9f;
    float: left;
    border-radius: 50%;
    margin-right: 10px;
    cursor: pointer;
}

.slide ol .active {
    background: #cecece;
}

.slide .left, .slide .right {
    width: 15px;
    height: 20px;
    background: #666666;
    position: absolute;
    top: 120px;
    cursor: pointer;
}

.slide .left {
    left: 10px;
}

.slide .right {
    right: 10px;
}

.slide ul li {
    position: absolute;
    left: 0px;
    top: 0px;
}

.slide_pic1 {
    width: 760px;
    height: 270px;
    background: red;
}
.slide_pic2 {
    width: 760px;
    height: 270px;
    background: green;
}
.slide_pic3 {
    width: 760px;
    height: 270px;
    background: blue;
}